x^2+3x-60+17x-30=90

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Solution for x^2+3x-60+17x-30=90 equation:


Simplifying
x2 + 3x + -60 + 17x + -30 = 90

Reorder the terms:
-60 + -30 + 3x + 17x + x2 = 90

Combine like terms: -60 + -30 = -90
-90 + 3x + 17x + x2 = 90

Combine like terms: 3x + 17x = 20x
-90 + 20x + x2 = 90

Solving
-90 + 20x + x2 = 90

Solving for variable 'x'.

Reorder the terms:
-90 + -90 + 20x + x2 = 90 + -90

Combine like terms: -90 + -90 = -180
-180 + 20x + x2 = 90 + -90

Combine like terms: 90 + -90 = 0
-180 + 20x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '180' to each side of the equation.
-180 + 20x + 180 + x2 = 0 + 180

Reorder the terms:
-180 + 180 + 20x + x2 = 0 + 180

Combine like terms: -180 + 180 = 0
0 + 20x + x2 = 0 + 180
20x + x2 = 0 + 180

Combine like terms: 0 + 180 = 180
20x + x2 = 180

The x term is 20x.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20x + 100 + x2 = 180 + 100

Reorder the terms:
100 + 20x + x2 = 180 + 100

Combine like terms: 180 + 100 = 280
100 + 20x + x2 = 280

Factor a perfect square on the left side:
(x + 10)(x + 10) = 280

Calculate the square root of the right side: 16.733200531

Break this problem into two subproblems by setting 
(x + 10) equal to 16.733200531 and -16.733200531.

Subproblem 1

x + 10 = 16.733200531 Simplifying x + 10 = 16.733200531 Reorder the terms: 10 + x = 16.733200531 Solving 10 + x = 16.733200531 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = 16.733200531 + -10 Combine like terms: 10 + -10 = 0 0 + x = 16.733200531 + -10 x = 16.733200531 + -10 Combine like terms: 16.733200531 + -10 = 6.733200531 x = 6.733200531 Simplifying x = 6.733200531

Subproblem 2

x + 10 = -16.733200531 Simplifying x + 10 = -16.733200531 Reorder the terms: 10 + x = -16.733200531 Solving 10 + x = -16.733200531 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = -16.733200531 + -10 Combine like terms: 10 + -10 = 0 0 + x = -16.733200531 + -10 x = -16.733200531 + -10 Combine like terms: -16.733200531 + -10 = -26.733200531 x = -26.733200531 Simplifying x = -26.733200531

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.733200531, -26.733200531}

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